/// <summary>
/// Project the list of image data in frontUIData into the embedding space
/// </summary>
/// <param name="frontUIData">Front Data Exchange</param>
/// <returns></returns>
private List <INumArray <double> > RankOneProjImgList(DataExchange frontUIData)
{
INumArray <double> l;
INumArray <double> r;
INumArray <double> data;
INumArray <double> vecData;
List <INumArray <double> > listImgVec = new List <INumArray <double> >();//list of projected image data
int nEl = frontUIData.ElementCount;
int nProj = _leftMatrix.size1;
ExchangeElement exEl;
for (int i = 0; i < nEl; i++)
{
exEl = frontUIData.GetElement(i);
data = GetData(exEl);
vecData = ArrFactory.DoubleArray(nProj);
for (int j = 0; j < nProj; j++)
{
l = (INumArray <double>)(_leftMatrix.GetCol(j));
r = (INumArray <double>)(_rightMatrix.GetCol(j));
vecData[j] = (((INumArray <double>)(l.Transpose())).Mult(data).Mult(r))[0];
}
listImgVec.Add(vecData);
}
return(listImgVec);
}
/// <summary>
/// Parse the configuration file
/// </summary>
/// <param name="frontUIData">front-backend data exchange</param>
private void ParseConfig(DataExchange frontUIData)
{
string configureFile = frontUIData.BackEndConfigFile;
string configureDir = System.IO.Path.GetDirectoryName(configureFile);
StreamReader ConfigReader = new StreamReader(configureFile);
string strLine;
string[] strArr;
try
{
m_strLeftMatFileName = _RootedPath(ConfigReader.ReadLine(), configureDir);
m_strRightMatFileName = _RootedPath(ConfigReader.ReadLine(), configureDir);
strLine = ConfigReader.ReadLine();
strArr = strLine.Split(new char[] { ' ' });
m_iReSizeHeight = Convert.ToInt32(strArr[0]);
m_iReSizeWidth = Convert.ToInt32(strArr[1]);
strLine = ConfigReader.ReadLine();
strArr = strLine.Split(new char[] { ' ' });
m_iLocalHeight = Convert.ToInt32(strArr[0]);
m_iLocalWidth = Convert.ToInt32(strArr[1]);
if ((m_iLocalWidth == 0) || (m_iLocalHeight == 0))
{
m_bGlocalTrans = false;
}
else
{
m_bGlocalTrans = true;
}
ExchangeElement el = frontUIData.GetElement(0);
if ((m_iReSizeHeight == (el.Height / 2)) && (m_iReSizeWidth == (el.Width / 2)))
{
m_bDownSample = true;
m_bResize = false;
}
else
{
if ((m_iReSizeHeight == el.Height) && (m_iReSizeWidth == el.Width))
{
m_bDownSample = false;
m_bResize = false;
}
else
{
m_bDownSample = false;
m_bResize = true;
}
}
}
catch
{
throw(new Exception("Exception: Configuration File Format Error"));
}
}
/// <summary>
/// Calculate the LBP distance
/// </summary>
/// <param name="frontUIData"></param>
public void LBPDistance(DataExchange frontUIData)
{
ParseConfig(frontUIData);
List <Image> listFilteredImage = new List <Image>();
int nEl = frontUIData.ElementCount;
ExchangeElement exEl = null;
Image filteredImage = null;
LBPFilter lbpFilter = new LBPFilter(1, 8, true, true);
int i, j;
for (i = 0; i < nEl; i++)
{
exEl = frontUIData.GetElement(i);
filteredImage = GetData(exEl, lbpFilter);
listFilteredImage.Add(filteredImage);
}
SparseFilterExample example;
LBPIntegralHistogrom lbpHist1 = new LBPIntegralHistogrom();
LBPIntegralHistogrom lbpHist2 = new LBPIntegralHistogrom();
StrongClassifier strongClassifier = LoadClassifier(_classifierFileName);
RectangularFilter rectangularFilters = LoadFilterSet(_rectangularFileName);
List <int> listRectangularIndices = GetFilterIndex(strongClassifier);
float[] score = new float[2];
double[] expScore = new double[2];
double[,] distanceMatrix = new double[nEl, nEl];
for (i = 0; i < nEl; i++)
{
lbpHist1.Create(listFilteredImage[i], lbpFilter.m_nFilterRange + 1);
for (j = 0; j < i; j++)
{
lbpHist2.Create(listFilteredImage[j], lbpFilter.m_nFilterRange + 1);
example = CreateFilterResponses(lbpHist1, lbpHist2,
rectangularFilters, listRectangularIndices);
score[0] = score[1] = 0;
score = strongClassifier.Vote(example, score, _stage);
expScore[0] = Math.Exp(Convert.ToDouble(score[0]));
expScore[1] = Math.Exp(Convert.ToDouble(score[1]));
distanceMatrix[i, j] = expScore[0] / (expScore[0] + expScore[1]) + 0.05;
distanceMatrix[j, i] = distanceMatrix[i, j];
}
}
frontUIData.DistanceMatrix = distanceMatrix;
}
/// <summary>
/// Read the status of each of the elements in frontUIData. An element can be
/// in the mode of frozen, selected, or free
/// </summary>
/// <param name="frontUIData">DataExchange data structure</param>
/// <param name="arrCoord">coordinate of elements</param>
/// <param name="listFixedImg">list of indices of images with fixed position</param>
/// <param name="nImgIndex">the selected image, if none, -1</param>
private void ReadStatus(DataExchange frontUIData, out double[,] arrCoord,
out List <int> listFixedImg, out int nImgIndex)
{
int nEl = frontUIData.ElementCount;
int nDim = frontUIData.Coordinates.GetLength(1);
ExchangeElement ele = null;
arrCoord = new double[nEl, nDim];
listFixedImg = new List <int>();
nImgIndex = -1;
Random randGen = new Random();
int i, j;
double dCoordVal;
for (i = 0; i < nEl; i++)
{
ele = frontUIData.GetElement(i);
switch (ele.State)
{
case ExchangeElement.ElementState.Selected:
nImgIndex = i;
break;
case ExchangeElement.ElementState.FrozenLocation:
listFixedImg.Add(i);
for (j = 0; j < nDim; j++)
{
dCoordVal = frontUIData.Coordinates[i, j];
arrCoord[i, j] = dCoordVal + (randGen.NextDouble() / 100);
}
break;
default:
for (j = 0; j < nDim; j++)
{
arrCoord[i, j] = frontUIData.Coordinates[i, j];
}
break;
}
}
}
